DARK & DRY CRACKLE EFFECTS ACRYLIC 100ML BOTTLEDark and Dry Crackle Effects has been formulated for creating dark and crackled soil on the lower surfaces of vehicles, dioramas, and vignettes. This product has been developed for the creation of scale crackle effects. On an acrylic base, use a thin layer and let dry. You can modify the thickness of the layer or speed up the drying process with a hairdryer.